Coming from the Toyota world I wouldnt think I would need a tune but EVERYWHERE (subaru forums) I've read that a even just a cold air intake would require a tune as well as any exhaust component would require one too. I was looking into the Cobb anyway but didnt know where to get a protune at...
The issue is though that a Subaru ecu can be flashed without any "signs" of it being flashed; follow me?
So I'm not too sure as what's in the ecu ,stock or flashed. If I understand correctly the ecu has to be stock/not flashed for Cobb to work but correct me if I'm wrong.